{"id":"CVE-2026-73191","description":"URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Apache Syncope.\n\n\n\n\n\nWhen the Syncope SRA is configured for CAS authentication, the target Apereo CAS instance's URL is calculated by unconditionally looking at client-supplied forwarded HTTP headers.\n\nThis issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.\n\nUsers are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.","cvssScore":6.1,"cvssVersion":"3.1","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvssMetrics":[{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","sourceName":"CISA-ADP","type":"Secondary"}],"cwes":["CWE-601"],"resolved":"NO-FIX-IDENTIFIED","published":"2026-09-14","lastModified":"2026-09-14","references":[{"url":"https://lists.apache.org/thread/vx9bons1znhdkdpsxwjpy6qqqjc8xqtk","source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/14/5","source":"af854a3a-2127-422b-91ae-364da2661108"}],"reasoning":{"decidingSource":"no-exploit","decidingReason":"Resolved from QUEUED-FOR-REVIEW: this CVE affects a known product, but nothing published names a fix and nothing published shows an exploit. That is a statement about the evidence, not about the defect — it does not mean the vulnerability is unimportant or unreachable, only that neither of the two things VRT can act on exists.","verdicts":[{"rule":"rejected","stage":"identity","outcome":"no-match"},{"rule":"armr-patch-file","stage":"scope","outcome":"no-match"},{"rule":"armr-secure-rule-file","stage":"scope","outcome":"no-match"},{"rule":"manual-classification","stage":"scope","outcome":"no-match"},{"rule":"h2-history","stage":"scope","outcome":"no-match"},{"rule":"non-java-upstream","stage":"scope","outcome":"no-match"},{"rule":"oracle-component","stage":"scope","outcome":"no-match"},{"rule":"osv-maven","stage":"scope","outcome":"no-match"},{"rule":"cna-maven-package","stage":"scope","outcome":"matched","status":"QUEUED-FOR-REVIEW","detail":"CNA declares the affected component is a Maven artifact"},{"rule":"patch-hint","stage":"disposition","outcome":"no-match"},{"rule":"open-source-maven","stage":"disposition","outcome":"no-match"},{"rule":"poc-derivable","stage":"disposition","outcome":"no-match"},{"rule":"no-exploit","stage":"disposition","outcome":"matched","status":"NO-FIX-IDENTIFIED","detail":"No public exploits or POCs found in Exploit-DB, Nuclei templates, or GitHub POC repositories, and CISA's Vulnrichment assessment records no demonstrated exploit. No upstream fix reference or open-source Maven package was found either, so there is nothing to act on from either direction.","decisive":true},{"rule":"secure-rule-match","stage":"disposition","outcome":"no-match"},{"rule":"below-action-threshold","stage":"disposition","outcome":"skipped"},{"rule":"no-exploit-published","stage":"disposition","outcome":"skipped"}]},"assessment":{"record":{"state":"active"},"protection":{"level":"none"},"action":{"state":"not-needed"},"review":{"state":"automated","basis":"upstream-data"}},"signals":{"hasPOC":false,"pocCount":0},"kev":{"inKEV":false},"epss":{"available":true,"score":0.00289,"percentile":0.21421},"ssvc":{"available":true,"exploitation":"none","automatable":"no","technicalImpact":"partial"}}